高亮度LCD平板背光源的制备及性能研究

为进一步提高内部无电极型LCD平板背光源的发光亮度及其使用寿命,制备了一种利用固体ITO导电薄膜为导电介质的等离子体激发发光平板背光源.这种电光源由两片平板玻璃中间充入纯氙气(气压2.66 104Pa)密封而成,光源内表面上均匀涂敷一层荧光粉,在玻璃板的外表面上用透明导电胶粘上一层ITO(氧化铟锡)导电薄膜作为导电介质,以1.1mm厚的玻璃板作为介质阻挡放电层,在高频交变电压的作用下产生等离子体,激发荧光粉发光.最大发光亮度可达5 000 cd/m2,可持续发光5 000 h,最佳激发频率10.0 kHz,发光均匀度大于92%.

Study on Preparation and Property of a High Luminance Flat Back-light for LCD

A new flat hack-light excited by plasma employing solid ITO film as the electrode was developed. This back-light was composed of two flat glasses in which the pure Xe （at pressure of 2.66 × 10^4 Pa） and a layer of phosphor was sealed. Two ITO films were added on the out surfaces by using the transparent conductive tape,where the glass with thickness of 1.1 mm was used as the dielectric barrier discharge layer. The white light was available by exciting the phosphor layer with the plasmas introduced by high-frequency voltage. The luminance was 5000 cd/me accompanied with the lighting homogeneity over 92%. The experimental results showed that the most suitable driving frequency was 10.0 kHz,and the lifetime reached 5000 hours.